Title:
DEMULTIPLEXING DEVICE, MULTIPLEXING DEVICE AND RELAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/065287
Kind Code:
A1
Abstract:
Disclosed is a demultiplexing device capable of reducing power consumption. The demultiplexing device is provided with frequency transformation receiving low-pass filter units (101 to 114) for performing frequency transform processing and low-pass filter processing for passing a desired band, and additionally performing downsampling for changing the sampling rate to half of the data speed of the input signal and outputting the same; receiving channel filter units (121 to 128) for waveform shaping the signal with desired frequency characteristics and outputting the same; a filter bank control unit (13) for generating a clock control signal for clocking the frequency transformation receiving low-pass filter units and the receiving channel filter units corresponding to the signal passband on the basis of channel information; and a receive clock supply unit (14) for clocking the frequency transformation receiving low-pass filter units and the receiving channel filter units corresponding to the signal passband on the basis of the clock control signal.
Inventors:
FUJIMURA AKINORI (JP)
Application Number:
PCT/JP2010/070602
Publication Date:
June 03, 2011
Filing Date:
November 18, 2010
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
FUJIMURA AKINORI (JP)
FUJIMURA AKINORI (JP)
International Classes:
H03H17/00; H03H17/02; H04J1/04
Domestic Patent References:
| WO2007136010A1 | 2007-11-29 | |||
| WO2010064485A1 | 2010-06-10 |
Foreign References:
| JPH0884049A | 1996-03-26 | |||
| JP2001051975A | 2001-02-23 | |||
| JP2738385B2 | 1998-04-08 |
Other References:
FUMIHIRO YAMASHITA; HIROSHI KAZAMA; YOSHINORI NAKASUGA: "A Proposal of Onboard Bandwidth-variable FFT Filter Banks and its Fundamental Characteristics", IEICE TRANSACTIONS B, vol. J85-B, no. 12, December 2002 (2002-12-01), pages 2290 - 2299
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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